He's Back! Grant Gustin to Stir Up Trouble Again on Glee

We knew it wouldn’t take long before the news of a single Blaine (Darren Criss) would bring Dalton Academy bad boy Sebastian (Grant Gustin) back to Glee. Gustin will return to the series for multiple episodes when Glee resumes its fourth season in November, according to TVLine.com.

Gustin played the role of Baby John in the national tour of West Side Story. He first appeared on Glee in November of 2011 as the new head of the Dalton Academy Warblers, who tried to steal Blaine away from then boyfriend Kurt (Chris Colfer).

Glee returns to FOX on Thursdays beginning November 8. Check out this deleted scene from season three of Gustin serenading Criss with the Jackson Five song “I Want You Back.”